Clean up permission validation in EthernetServiceImpl am: a4e8e77e24

Original change: https://android-review.googlesource.com/c/platform/frameworks/opt/net/ethernet/+/2018836

Change-Id: Ief86bb5d390b8fae8e893afc36232b818630c9ff
tree: c1f108f4d0056b5ffc73872f24359a2749a152f4
  1. service-t/
  2. tests/